【作者】 张聪娟； 刘渊；

【Author】 ZHANG Congjuan;LIU Yuan;The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University;

【机构】 高分子材料工程国家重点实验室,四川大学高分子研究所；

【摘要】 <正>PA66是一种广泛应用的热塑性工程塑料。由于纯PA66刚性小、吸水性大、尺寸稳定性差^[1],在实际使用中一般通过玻纤增强或矿物填充。目前增强和填充型PA66复合材料已广泛应用于电子电气、汽车制造等领域^[2]。鉴于上述领域所使用材料一般要求具有阻燃性,因此增强和填充型尼龙66的阻燃改性近年来成为研究热点。三聚氰胺氰尿酸盐（MCA）是一种环保更多还原

【Abstract】 The nitrogen flame retardant melamine cyanurate（MCA） was employed to flame-retard glass fiber（GF）reinforced PA66 and calcium carbonate filled PA66 respectively.The research showed that in MCA/GF/PA66,MCA could accelerate the degradation of nylon and decrease the viscosity of the melt.The materials exhibited better melt flowability during combustion,and the melt droplets rapidly drop from the fire zone and quickly self-extinguished.However,for MCA/CaCO₃/PA6,the alkaline CaCO₃ filler absorbed the cyanurate from the decomposition of MCA which weakened the catalytic degradation on nylon.The system still maintained a high melt viscosity leading to slow melt droplets and difficult self-extinguishment.更多还原